JP2004183973A - Combustion apparatus - Google Patents

Combustion apparatus Download PDF

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Publication number
JP2004183973A
JP2004183973A JP2002351060A JP2002351060A JP2004183973A JP 2004183973 A JP2004183973 A JP 2004183973A JP 2002351060 A JP2002351060 A JP 2002351060A JP 2002351060 A JP2002351060 A JP 2002351060A JP 2004183973 A JP2004183973 A JP 2004183973A
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JP
Japan
Prior art keywords
vaporized gas
flame
combustion
vaporizer
passage
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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JP2002351060A
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Japanese (ja)
Inventor
Norio Yotsuya
規夫 肆矢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2002351060A priority Critical patent/JP2004183973A/en
Publication of JP2004183973A publication Critical patent/JP2004183973A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a combustion apparatus suppressing the occurrence of irritating odor and carbon monoxide and not increasing the power consumption of an electric heater by promoting the mixing of inflammable mixture to uniformize the distribution of flame formed in a burner port. <P>SOLUTION: This combustion apparatus comprises a carburetor 20 vaporizing liquid fuel, a carrying passage 27 communicating with the downstream side of a carburetor, the burner port 30 installed on the downstream side of the carrying passage, a secondary air passage 33 dividing the burner port into multiple pieces, a burning part 35 formed by arranging the burner port and the secondary air passage parallel with an vaporization surface 24, and a vaporized gas control part 38 projected toward the inside of the carrying passage 27 installed in the burning part 35. Thus, the mixing of the vaporized gas in the carrying passage is promoted by the vaporized gas control part 38 to uniformize the distribution of the flame forming the burner port so as to suppress the occurrence of irritating odor and carbon monoxide for preventing the deterioration of combustion gas and to prevent an increase in the power consumption of the electric heater of the carburetor. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野分野】
本発明は、家庭用の給湯機や暖房機に搭載し、液体燃料の気化ガスの混合を促進させた気化式の燃焼装置に関するものである。
【0002】
【従来の技術】
従来のこの種の燃焼装置は、図12に示すように、1は、液体燃料を供給するポンプ、2は、この液体燃料が通る送油管、3は、液体燃料が噴出されるノズル、4は、電気ヒータ、5は、電気ヒータ4の埋め込まれた気化器、6は、燃焼用空気を供給する送風ファン、7は、燃焼用空気を気化器5に導入するための送風路、8は、送風路7内に設けられた1次空気通路、9は、気化器5で気化された燃料と混合された可燃混合気10を、均一に混合する混合室である。
【0003】
11は、混合室9の上部に設け、可燃混合気10が噴出して燃焼する多数の炎口、12は、炎口11の近傍に設けられ、炎口11に燃焼用空気を与える2次空気通路、13は、2次空気通路12の上部に設けた2次空気口、14は、気化器5の側部から炎口11の上方に突出する受熱フィン、15は、1次空気通路8の入り口に設け、開閉により送風路7の断面積を変化させるとともに、閉時に1次空気通路8を略閉塞する空気量調節手段である。
【0004】
上記構成において、可燃混合気10は炎口11より噴出し、かつ2次空気口13より燃焼用空気を得て燃焼し青炎16となり、一方、気化器5が電気ヒータ4により所定の温度に加熱されると、液体燃料はポンプ1から送油管2を通り、ノズル3から気化器5へ液滴となって送出され、加熱気化される。
【0005】
また、燃焼用空気は送風ファン6により送風路7を通り、その一部は1次空気通路8から気化器5内へ導入され、気化された燃料と混合されて可燃混合気10となり、混合室9で均一に混合された後、炎口11から噴出して燃焼される。一方、残りの空気は2次空気通路12から炎口11の近傍に設けられた2次空気口13に供給され、燃焼に寄与するようになっていた。
【0006】
気化器5は、受熱フィン14を介して青炎16から燃焼熱を供給され加熱するようになっていた。また燃焼量が大きい場合は、空気量調節手段15を開け、気化器5に多量の空気を導入して燃焼を促進させ、燃焼量が小さい場合は、空気量調節手段15で1次空気通路8を閉塞して、燃焼用空気に加圧して耐風性能を向上し、燃焼範囲を拡大させるようになっていた(例えば、特許文献1参照)。
【0007】
しかしながら、前記従来の構成では、ノズル3から供給される燃料が、気化器5内で気化し、可燃混合気10として混合室9に供給される時に、可燃混合気10の流れ方向と同一の方向に炎口11が配置されているので、可燃混合気10の混合の片寄りが解消されないため、炎口11上に形成する青炎16の分布が不均一になり、局部的な青炎16のリフトにより刺激臭や一酸化炭素が発生するという課題を有していた。
【0008】
また、気化器5の受熱フィン14の近傍では青炎16のリフトにより、受熱フィン14に燃焼熱が伝わらず、電気ヒータ4の消費電力が増加するという課題を有していた。
【0009】
【特許文献1】
特開平8−21606号公報
【0010】
【発明が解決しようとする課題】
上記従来の技術の問題点に鑑み、本発明が解決しようとする課題は、可燃混合気の混合を促進し、炎口に形成する炎の分布を均一化して、刺激臭や一酸化炭素の発生を抑制し、かつ電気ヒータの消費電力も増加させない燃焼装置を提供することを目的とする。
【0011】
【課題を解決するための手段】
上記目的を達成するために本発明の燃焼装置は、液体燃料を気化する気化面を有する気化器と、この気化器の下流側に連通する搬送通路と、この搬送通路の下流側に設置された多孔状の炎口と、この炎口に隣接して炎口に燃焼用空気を与え、かつ炎口を複数個に分割する2次空気通路と、前記気化面に並行に配置した炎口と2次空気通路で構成する燃焼部と、この燃焼部の一部に前記搬送通路内に向かって突出する気化ガス制御部を備えたものである。
【0012】
これによって、搬送通路内での気化ガスの混合を促進し、炎口に形成する火炎の分布を均一化して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止し、気化器の加熱手段の消費電力を増加しないようにしている。
【0013】
【発明の実施の形態】
上記した本発明の目的は、各請求項に記載した構成を実施の形態とすることにより達成できるので、以下には各請求項の構成による作用効果を併記し併せて請求項記載の構成のうち説明を必要とする特定用語にについては詳細な説明を加えて、本発明における実施の形態の説明とする。
【0014】
請求項1記載に係る発明は、液体燃料を気化する気化面を有する気化器と、この気化器の下流側に連通する搬送通路と、この搬送通路の下流側に設置された多孔状の炎口と、この炎口に隣接して炎口に燃焼用空気を与え、かつ炎口を複数個に分割する2次空気通路と、前記気化面に並行に配置した炎口と2次空気通路で構成する燃焼部と、この燃焼部の一部に前記搬送通路内に向かって突出する気化ガス制御部を設けたもので、気化ガスが搬送通路内で、気化面と並行に配置した炎口と2次空気通路に分散され、かつ気化ガス制御部により気化ガスの混合を促進し、炎口上に形成する火炎の分布を均一化することができる。これにより刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止し気化器の加熱手段の消費電力を増加しないようにできる。
【0015】
請求項2記載に係る発明は、請求項1記載の気化ガス制御部を、炎口を突出させて構成することにより、気化ガス制御部に炎口上の火炎の熱を伝え、気化ガスの再結露を防止し、かつ気化ガスの混合を促進し、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止し、気化器の加熱手段の消費電力を増加しないようにできる。
【0016】
請求項3記載に係る発明は、請求項1または請求項2記載の気化ガス制御部を、2次空気通路を突出させて構成することにより、気化ガス制御部を炎口から離れた位置に配置し、炎口に流入する気化ガスの流れ方向を変えて流量を抑制するので、炎口上に形成する火炎の分布を均一化して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止し、気化器の加熱手段の消費電力を増加しないようにできる。
【0017】
請求項4記載に係る発明は、請求項1〜3のいずれかに記載の気化ガス制御部を、搬送通路の窪み部上方の燃焼部から突出させて構成することにより、気化器の気化ガス出口から噴出する気化ガスが窪み部で、流れ方向を変えられた後に、その流れ中に気化ガス制御部が位置することになり、気化ガスの流れを乱さないように分流して気化器側に近い炎口に気化ガスを多く配分し、気化器近傍の火力を増加させて気化器の加熱手段の消費電力を低減することができる。
【0018】
請求項5記載に係る発明は、請求項1〜4のいずれかに記載の気化ガス制御部を、搬送通路の傾斜部に対向して、気化器から離れるほどに突出する長さを短くして複数個を設置して構成することにより、搬送通路の下流に設ける複数個の炎口に均一の気化ガスが配分されるようにして気化ガスの混合を促進するので、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0019】
請求項6記載に係る発明は、請求項1〜5のいずれかに記載の気化ガス制御部を、搬送通路の窪み部に設けた搬送通路突起部の下流側の上方に設けることにより、搬送通路突起部に流れを変えられ、分流した気化ガスが気化ガス制御部に衝突し、気化器近傍の炎口により多くの気化ガスを配分するので、気化器近傍の火力を増加させて気化器の加熱手段の消費電力を低減することができる。
【0020】
請求項7記載に係る発明は、請求項1〜6のいずれかに記載の気化ガス制御部を、搬送通路内に突出する制御壁の略中央に切り欠き部を設けて構成することにより、気化ガス制御部の直後に設ける炎口に流入する気化ガスの炎口中央部分の流量低下を防止するので、炎口中央部分の火炎のリフトを防止して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0021】
請求項8記載に係る発明は、請求項1〜7のいずれかに記載の気化ガス制御部を、搬送通路内に突出する制御壁に複数個の小切り欠き部を設けて構成することにより、気化ガス制御部の直後に設ける炎口に流入する気化ガスの流量低下を均一に整流しながら防止するので、炎口中央部分の火炎のリフトを防止して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0022】
請求項9記載に係る発明は、請求項1〜8のいずれかに記載の気化ガス制御部を、気化器の気化ガス出口の近傍に位置し、気化ガス出口から噴出する気化ガスを前記搬送通路内の中央方向に誘導する気化ガスガイドの下流側に設けることにより、気化器の中央方向の気化ガス濃度を上昇させ、火炎のリフトを防止するので、気化ガスの混合を促進し、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0023】
請求項10記載に係る発明は、請求項1〜9のいずれかに記載の気化ガス制御部を構成する制御壁近傍の気化器側に位置する炎口内に均圧板を設けることにより、気化ガス制御部により気化ガスの流量が増加して炎口での気化ガスの噴出流速が増加して火炎が不安定になることを防止するので、火炎のリフトを防止し、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0024】
【実施例】
以下、本発明の実施例について図面を参照しながら説明する。
【0025】
(実施例1)
図1は本発明の実施例1における燃焼装置の断面図で、図2(a)は同装置の燃焼部分の概略上面図で、図2(b)は同じく下方より見た断面図である。17は、液体燃料である灯油を燃料タンク(図示せず)から燃焼装置に汲み上げる燃料ポンプで、18は、燃料ポンプ17から送油管19を介して液体燃料が供給される燃料供給ノズルである。
【0026】
20は、燃料供給ノズル18前方に設けられた気化器で、アルミ、アルミダイカスト、黄銅、銅、鋳鉄等の熱伝導の良い、耐熱材料で筒状に形成されている。気化器20の側面には、送風管21の端部が臨むように、一部を開口された気化器蓋22が設けられており、この気化器蓋22は、アルミ、アルミダイカスト、黄銅、銅等の熱伝導の良い材料で造られている。
【0027】
燃料供給ノズル18は、送風管21内に気化器20に向けて挿入されている。気化器20の下部には、気化器蓋22とで構成させる気化ガス出口23が設けられている。気化器20の燃料供給ノズル18の対向する内壁と気化器20側部の内壁が気化面24を構成している。特に気化面24は、燃料供給ノズル18の対向する内壁に下方ほど燃料供給ノズル18側に近づくような傾斜面25に形成している。
【0028】
26は、気化ガス出口23に設けた出口突起で、傾斜面25から気化器蓋22に向けて突出させており、これにより気化ガス出口23は、2つの出口に分けられて構成されている。27は、気化器20の気化ガス出口23下方に設けられ、アルミ、アルミダイカスト、黄銅、銅等の熱伝導の良い耐熱材料で碗状に形成された搬送通路である。搬送通路27は、気化ガス出口23の下方部分に窪み部28を構成し、その窪み部28から気化器20と反対の方向に向かって斜面29を立ち上げる構成にしている。
【0029】
また、搬送通路27の下流には、鋼、鉄、チタン、セラミック等の耐熱材料で造られた多孔状の炎口30が設けられており、平板状のパンチング板を折り曲げて構成している。31は、炎口30と2次空気通路33の複数個の組み合わせで構成された燃焼部35の全体を覆うバーナケースで、その内側の空間は気化器20、搬送通路27、炎口30の周囲を囲むように設けられた2次空気案内通路32となっている。
【0030】
2次空気通路33は、図2(a)に示すように炎口30に隣接して、かつ炎口30を複数個に分割する筒状をなして2次空気案内通路32に、開口した両端部を連通しており、炎口30の下流側に向かって臨む複数個の2次空気噴出口34を設けている。
【0031】
また2次空気通路33は、平板を折り曲げて構成し、炎口30と2次空気通路33は、炎口の下流側に向かって同一平面になるように構成し、かつ気化面24に対して並行に配置されている。36は、炎口30や2次空気案内通路32との間に設けられた側壁で、その内側に燃焼室37が形成される。
【0032】
38は、燃焼部35の下部に搬送通路27内に向かって突出する制御壁39で構成する気化ガス制御部で、制御壁39は、炎口30の近傍に気化ガスの流れを分散するように配置されている。
【0033】
また気化ガス制御部38は、炎口30に対して気化器20とは逆側の方向に配置され、気化ガスが搬送通路27内を制御壁39に衝突し、沿うことにより炎口30内に気化ガスが流入しやすくしている。気化ガス制御部38の形状は、耐熱材料(例えばステンレス鋼、鉄、銅、セラミック等)の平板に複数個の切り起こしを設け、2次空気通路33における搬送通路27側の側部に装着している。40は、気化器20の背面に燃焼室37に張り出すように形成されたフィン状の受熱部で、炎口30の上方に張り出すような位置に複数個配置されている。
【0034】
41は、空気通路32の天板部42に、炎口30の上方を覆うように載置された熱交換器で、熱伝導の良い耐熱性の銅やアルミ材料を用いて筒状に構成され、途中に設ける複数本の温水管に多数の板状のフィンを設けている。43は、燃焼用空気を供給する送風機で、羽根車には高圧を出せるターボファンやラジアルファン等を用い、それをモータで回転させるように構成され、空気案内通路32の側部の一部に連通された送風通路44に連結されている。
【0035】
この送風通路44の内部に、前記送風管21が設けられている。この送風管21には、気化器蓋22に挿入される手前の位置に、送風通路44と連通する複数個の連通口45が設けられている。46は、送風通路44内に設けられた空気調節器で、開閉によって送風管21の送風抵抗を変化させる閉止ダンパ47と上部ダンパ48とこれらの閉止ダンパ47と上部ダンパ48を回転駆動する駆動装置49とで構成されている。
【0036】
閉止ダンパ47と上部ダンパ48は、2枚の板の板面を軸として同軸上に回転させる構成で設けられており、上下方向の開閉でも左右方向の開でも良い。閉止ダンパ47は、送風管21の入り口に接触する側に設けられ、一部に複数個の透孔50を設けている。上部ダンパ48は、閉止ダンパ47の外側に重なり合う位置に設けられ、最小燃焼量を含む領域のモードの時は閉止ダンパ47に略接触し、透孔50を略閉塞し、燃焼量が中間の領域のモードでは閉止ダンパ47との間に角度を設けて、透孔50を開口させるように構成されている。
【0037】
燃焼装置の燃焼量が最大になる領域を含むモードの時は、閉止ダンパ47と上部ダンパ48がともに開放され、送風管21の入り口が最大に拡大される。駆動装置49はステッピングモータやソレノイドやモータと歯車、カム等を用いて、閉止ダンパ47と上部ダンパ48がそれぞれの動作を行うように組み合わせて構成され、駆動装置49の駆動部分が閉止ダンパ47と上部ダンパ48に連結されている。
【0038】
51は、気化器20の加熱手段で、気化器20に鋳込まれたニクロム線、カンタル線等の電気式の発熱体で構成される。52は、気化器20の温度を検知するための気化器温度検知部で、サーミスタ、熱電対等で構成される。53は、気化器温度検知部52の信号により、加熱手段51をオン、オフさせて気化器20を所定の温度に維持する制御部である。制御部53は、運転スイッチの指示や負荷の大きさにより燃料ポンプ17と送風機43と空気調節器46を作動し、適正な状態にコントロールするように設けられている。なお、図中54は炎口30上に形成される火炎で、55は空気の流れで、56は可燃混合気である気化ガスの流れである。
【0039】
以上のように構成された燃焼装置について、以下その動作と作用を説明する。まず、電源(図示せず)を投入すると加熱手段51に通電され、気化器20が加熱される。気化器20が所定の温度に達すると気化器温度検知部52により検知を行い、制御部53の指示により加熱手段51をオン、オフさせて気化器20の予熱温度(例えば220〜260℃)を一定に維持しながら予熱を行う。
【0040】
運転を開始する時は、制御部53の指示により送風機43が作動し、燃焼用空気が供給される。送風通路44に供給された空気55は空気調節器46の閉止ダンパ47と上部ダンパ48で空気量を調節した後、送風管21内に供給される1次空気と2次空気案内通路33内に供給される2次空気とに分けられる。これと同時に燃料ポンプ17が作動し、液体燃料が燃料供給ノズル18から気化器20に噴霧される。
【0041】
液体燃料は高温の気化面24で気化され、送風管21を介して供給される空気55と混合されながら、気化ガス出口23を通り、燃焼部35の下部に沿って装着されている気化ガス制御部38の制御壁39に衝突し、流れを変えられながら通過して、搬送通路27に分散して、均一な可燃の気化ガス56となって炎口30に送られる。
【0042】
また、予め火花放電を行っていた点火電極(図示なし)により炎口30から噴出する可燃の気化ガス56に着火し、火炎54が形成され燃焼を開始する。以後、火炎54の熱を気化器20の受熱部40で受けて、気化器20は加熱される。炎口30上に形成された火炎54は、炎検知部(フレームロッド:図示せず)によりその状態を監視され、安定燃焼を持続させる。また燃焼で生じた高温の燃焼ガスは、熱交換器41で熱交換され排出される。
【0043】
また燃焼量が最大の場合は、空気調節器46の閉止ダンパ47と上部ダンパ48を最大に開け、送風管21の通路抵抗を最小にし、送風機43の回転数を最高にする。この時は、特に閉止ダンパ47の角度が最大となり、上部ダンパ48は閉止ダンパ47に接触しているか、角度を設定されて更に大きく開けられているかのどちらでも良い。次に燃焼量を小さくする場合は、燃料ポンプ17の出力を低下させると同時に送風機43の回転数を減少させる(これが最大燃焼量を含む領域である)。
【0044】
また燃焼量が最小になる場合は、閉止ダンパ47を送風管21に接触させ、上部ダンパ48をその外側から覆うように接触させ、送風管21を略閉塞し通路抵抗を最大にする。これにより、気化器20には少量の空気が送風管21の連通口45から導入され、燃焼反応を緩慢にするので、燃焼量が減少しても炎口30に火炎が密着することが無く形成できるので、炎口30の温度が上昇し赤熱状態になることが無く、搬送通路27への逆火や炎口30の熱変形を防止でき、燃焼量を小さく絞れることにより、燃焼量調節幅を大きくとるようにしている(これが最小燃焼量を含む領域である)。
【0045】
また中間の燃焼量の場合は、閉止ダンパ47を送風管21に接触させ送風管21を略閉塞し、上部ダンパ48をその外側から覆うように角度を持たせて開口して、閉止ダンパ47の透孔50を開口し送風管21の送風抵抗を最大燃焼量を含む領域と最小燃焼量を含む領域の中間の領域設定にしている(これが中間燃焼の領域である)。これにより気化器20には適量の空気が導入され、燃焼反応を促進させて安定な燃焼を行うようにしている。
【0046】
以上のように、本実施例においては、液体燃料を気化する気化面24を有する気化器20と、この気化器20の下流側に連通する搬送通路27と、この搬送通路27の下流側に設置された炎口30と、この炎口30に隣接し、炎口30を複数個に分割する2次空気通路33と、この炎口30と2次空気通路33を前記気化面24に並行に配置した燃焼部35と、この燃焼部35の一部に前記搬送通路27内に向かって突出する気化ガス制御部38を設けたものである。
【0047】
従って、気化ガス56が搬送通路27内で、気化面24と並行に配置した複数個の炎口30と2次空気通路33の上流部分で分散され混合を促進するので、炎口30上に形成する火炎54の分布を均一化することができる。これにより、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止し気化器20の加熱手段51の消費電力を増加しないようにできる。
【0048】
また、気化面24に並行に複数個の炎口30を設け、搬送通路27内で、気化ガス出口23から搬送通路27の周壁沿いに流れる濃度の濃い気化ガス56を複数個の炎口30に分割して連続させて流入させるので、気化ガス56を搬送通路27の中央方向27aに向けて、空気55との混合を促進し、炎口30上に形成する火炎54の分布を均一化することができる。これにより、炎口30の中央付近における火炎54の局部的なリフトを防止して、刺激臭や一酸化炭素の発生を防止し、燃焼ガスの排ガス特性を向上することができる。
【0049】
また、気化器20の受熱部40近傍の火炎54が均一になり、受熱部40に対して均等に熱を加えるので、受熱部40の不均一な余剰の空気55による冷却を防止して、気化器20への受熱量が増加し、加熱手段51を使用する時間が短縮され、加熱手段51の消費電力を低減できる。
【0050】
また、本実施例では、空気調節器46を送風通路44の中に設け、最大燃焼量を含む領域と、最小燃焼量を含む領域と、それらの中間領域の時に送風管21に導入する1次空気量をそれぞれ段階的に調節することにより、燃焼量調節範囲を大幅に拡大するとともに、この広い調節範囲において耐風性能を良好に保つことができる。
【0051】
また、本実施例の空気調節器44の閉止ダンパ47と上部ダンパ48を気化器20の予熱待機中に閉止することにより、気化器20と搬送通路27の温度低下を防止でき、気化器20の加熱手段51の消費電力低減を行うことができる。
【0052】
(実施例2)
図3は、本発明の実施例2における燃焼装置を示す断面図である。本実施例は、気化ガス制御部を、炎口の側部を突出させて構成する点において実施例1の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0053】
図3において、気化ガス制御部38aは、搬送通路27に向かって垂直に、炎口30の側部を突出させた制御壁39aで構成している。
【0054】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。炎口30と一体に構成した気化ガス制御部38aの制御壁39aには、炎口30上の火炎54の熱が伝わり、制御壁39aの温度を上昇させて、気化ガス56の再結露を防止し、空気55と気化ガス56の混合を促進し、炎口30上の火炎54の分布を均一にし、火炎54の局部リフトを防止し、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止し、気化器20の受熱部40近傍の火炎54が均一になり、受熱部40に対して均等に熱を加えるようにしている。
【0055】
以上のように、本実施例においては、炎口30からの伝導熱で制御壁39aの温度を上昇させ、気化ガスの再結露を防止するので、気化ガス56を均一に形成し、火炎54の局部的なリフトを防止して、刺激臭や一酸化炭素の発生を防止し、燃焼ガスの排ガス特性を向上することができる。
【0056】
また、気化器20への受熱量が増加し、気化器20の加熱手段51の消費電力を増加しないようにできる。また、気化ガス制御部38aを炎口30と一体に構成し、部品点数を削減でき、組み立ても簡易になるので、コストダウンを行うことができる。
【0057】
(実施例3)
図4は、本発明の実施例3における燃焼装置を示す断面図である。本実施例は、気化ガス制御部を、2次空気通路の側部を突出させて構成する点において実施例1及び2の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0058】
気化ガス制御部38bは、搬送通路27に向かって垂直に、2次空気通路33の側部を一体に突出させた制御壁39aで構成し、かつ炎口30への気化ガス56が流入する部分から離れて位置している。
【0059】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化ガス制御部38bを炎口30に隣接する2次空気通路33と一体に構成し、気化ガス制御部38bの制御壁39bを炎口30への気化ガス56が流入する部分から離れて位置させているので、制御壁39bに衝突した気化ガス56が反転して別の方向より炎口30に流入する気化ガス56と接触してブレーキがかかり、気化ガス56の方向を変え流量も抑制して、炎口30上に形成する火炎54の分布を均一化するようにしている。
【0060】
以上のように、本実施例においては、気化ガス56を均一に形成し、火炎54の局部的なリフトを防止して、刺激臭や一酸化炭素の発生を防止し、燃焼ガスの排ガス特性を向上することができる。また、気化器20への受熱量が増加し、気化器20の加熱手段51の消費電力を増加しないようにできる。また、気化ガス制御部38aを2次空気通路33と一体に構成し、部品点数を削減でき、組み立ても簡易となり、コストダウンを行うことができる。
【0061】
(実施例4)
図5は、本発明の実施例4における燃焼装置を示す断面図である。本実施例は、気化ガス制御部を、搬送通路の窪み部上方に位置する燃焼部から突出させて構成する点において実施例1〜3の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0062】
気化ガス制御部38cは、搬送通路27の窪み部28上方の燃焼部35から搬送通路27に向かって垂直に突出させた制御壁39cで構成し、かつ気化ガス56の流れを気化器20側の炎口30に向けさせている。
【0063】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化器20の気化ガス出口23から噴出した気化ガス56は、窪み部28で流れ方向を変えられる。そして、気化ガス制御部38cは前記流れ方向を変えられた後の中に配置して、気化ガス56を乱さないように分流して気化器20側の炎口30に気化ガス56を多く配分するようにしている。従って、気化器20に近い炎口30の火炎が多く生じる。
【0064】
以上のように、本実施例においては、気化ガス制御部38cの制御壁39cにより、気化ガス56の流れを気化器20側の炎口30に向けさせ、気化器20の受熱部40近傍における火炎54の火力を増加させて、受熱部40に対して多量の熱を加えるので、気化器20の加熱手段51の消費電力を低減することができる。
【0065】
また、窪み部28で、気化ガス56の流れを変え、更に気化ガス制御部38cの制御壁39cで分流するので、気化ガス38が整流し易く正確に気化ガス56の配分を行うことができる。
【0066】
(実施例5)
図6は、本発明の実施例5における燃焼装置を示す断面図である。本実施例は、気化ガス制御部を、搬送通路の傾斜部に相対向して燃焼部より突出させた長さの異なる複数の制御壁で構成する点において実施例1〜4の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0067】
図6において、気化ガス制御部38dは、搬送通路27の傾斜部29に相対向して燃焼部35より突出させた長さの異なる複数の制御壁39dで構成してあり、その制御壁39dを傾斜部29の傾斜度合いに対応して気化器20から離れるほどに徐々に突出する長さを短くしてある。
【0068】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。搬送通路27の傾斜部29に沿って移動する気化ガス56は、傾斜部29に相対向して燃焼部35より突出した気化ガス制御部38dの複数の制御壁39dに次々衝突して分散し、下流に位置する複数個の炎口30に均一の気化ガスが配分される。
【0069】
また、傾斜部29の傾斜度合いに合わせて3個の制御壁39dを気化器20から離れるほどに徐々に突出する長さを短くして、気化ガス56の配分の急激な変化を防止し、均一な気化ガス56の流れを形成するようにしている。従って、炎口30には均一な火炎が形成される。
【0070】
以上のように、本実施例においては、炎口30に対して気化ガス56の配分を均一化するので、火炎54の局部リフトを防止して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0071】
また、気化器20の受熱部40近傍の火炎54が均一になり、受熱部40に対して均等に熱を加えるので、気化器20への受熱量が増加し、加熱手段51を使用する時間が短縮され、加熱手段51の消費電力を低減できる。
【0072】
(実施例6)
図7(a)は、本発明の実施例6における燃焼装置の搬送通路部分を示す上面図で、図7(b)は同じく燃焼装置を示す断面図である。本実施例は、気化ガス制御部を、搬送通路の底部に設けた搬送通路突起部の下流側において燃焼部の下部から搬送通路内に突出させた構成にした点において実施例1〜5の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0073】
57は、搬送通路27の窪み部28の内底部における略中央に設けた搬送通路突起部で、気化ガス制御部38は搬送通路突起部57の下流側において燃焼部35の下部から搬送通路27内に突出させている。
【0074】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化器20の気化ガス出口23から噴出した気化ガス56は、窪み部28で流れ方向を変えられた時に、窪み部28の略中央に位置する搬送通路突起部57により、気化器20に、より近い炎口30に気化ガス56の一部が配分され、残りの気化ガス56は、窪み部28に沿って移動し、その気化ガス56の流れ中に気化ガス制御部38が位置して、さらに分流され気化器20側に位置する炎口30に、より多く配分される。従って、気化器20近傍における炎口30に形成される火炎54の火力は気化器20に近づくにしたがい段階的に増加する。
【0075】
以上のように、本実施例においては、搬送通路突起部57と気化ガス制御部38により、気化器20近傍における炎口30に形成される火炎54の火力を段階的に増加させて、気化器20への受熱量が増加し、気化器20の加熱手段51の消費電力を低減することができる。
【0076】
(実施例7)
図8(a)は、本発明の実施例7における燃焼装置の搬送通路部分を示す正面断面図で、図8(b)は同じく燃焼装置を示す側断面図である。本実施例は、気化ガス制御部を、燃焼部の下部から搬送通路内に突出させ、略中央に切り欠き部を設けた制御壁で構成した点において実施例1〜6の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0077】
気化ガス制御部38eは、燃焼部35の下部から搬送通路27内に突出させ、下端の略中央に切り欠き部58を設けた制御壁39eで構成している。
【0078】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化ガス制御部38eの制御壁39eに沿って移動する気化ガス56は、一部が制御壁39eの下端の略中央に位置する切り欠き部58を抜けて、隣接する2次空気通路33の直後に位置する炎口30に流入し、炎口30中央部分の気化ガス56の流量低下を防止するようにしている。従って、燃焼部35の中央部においても安定した火炎が形成される。
【0079】
以上のように、本実施例においては、気化ガス制御部38eの後方に位置する炎口30の中央部分での火炎54のリフトを防止して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0080】
(実施例8)
図9(a)は、本発明の実施例8における燃焼装置の搬送通路部分を示す正面断面図で、図9(b)は同じく燃焼装置を示す側断面図ある。本実施例は、気化ガス制御部を、燃焼部の下部から搬送通路内に突出させ、略中央に複数の小切り欠き部を設けた制御壁で構成した点において実施例1〜7の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0081】
気化ガス制御部38fは、燃焼部35の下部から搬送通路27内に突出させ、略中央に複数の小切り欠き部59を設けた制御壁39fで構成している。
【0082】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化ガス制御部38fの制御壁39fに沿って移動する気化ガス56は、一部が制御壁39fに設けた複数個の小切り欠き部59を抜けて、隣接する2次空気通路33の直後に位置する炎口30に流入し、この炎口30の部分に流入する気化ガス56の流量低下を均一に整流しながら防止するようにしている。
【0083】
以上のように、本実施例においては、気化ガス制御部38fの後方に位置する炎口30の火炎54の分布を均一化して、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0084】
(実施例9)
図10(a)は、本発明の実施例9における燃焼装置の気化ガス出口部分を示す正面断面図で、図10(b)は同じく側断面図である。本実施例は、気化ガスガイドを気化ガス出口の近傍に設けた点において実施例1〜8の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0085】
60は、鋼、鉄、銅、セラミック等の耐熱材料からなる一対の気化ガスガイドで、気化器20の気化ガス出口23の近傍に搬送通路27内に突出させて設けている。そして、気化ガスガイド60は気化ガス出口23から噴出する気化ガス56を搬送通路27内の中央方向に誘導するように搬送通路27の左右側に位置させている。気化ガス制御部38は気化ガスガイド60の下流において、燃焼部35の下部から搬送通路27内に向かって突出した制御壁39で構成されている。
【0086】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化ガスガイド60は、搬送通路27内で、気化ガス出口23から搬送通路27の周壁沿いに流れる濃度の濃い気化ガス56を搬送通路27の中央方向に向けて、空気55との混合を促進した後に、気化ガス制御部38により、気化ガス56を分散して、炎口30に均一に流入するようにしている。
【0087】
以上のように、本実施例においては、気化器20における中央方向の気化ガス56の濃度を上昇させ、火炎54のリフトを防止するので、気化ガス制御部38により、容易に気化ガス56の混合を促進でき、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0088】
また、気化器20の受熱部40近傍の火炎54が均一になり、受熱部40に対して均等に熱を加えるので、受熱部40の不均一な余剰の空気55による冷却を防止して、気化器20への受熱量が増加し、加熱手段51を使用する時間が短縮され、加熱手段51の消費電力を低減できる。
【0089】
また、気化ガスガイド60を気化ガス出口23の近傍に設けるので、気化ガス出口23から噴出する気化ガス56に対して、気化ガス56の再結露に至る前に流れを分散しやすく、下流側に位置する炎口30の全域に均一な気化ガス56を送ることができる。
【0090】
(実施例10)
図11は、本発明の実施例10における燃焼装置を示す断面図である。本実施例は、気化ガス制御部に近い炎口内に均圧板を設けた点において実施例1〜9の発明と異なり、それ以外の同一の構成並びに作用効果を奏する部分には同一符号を付して詳細な説明を省略し、異なるところを中心に説明する。
【0091】
61は、ネット(金網)やパンチング板で構成する均圧板で、気化器20側より順に2次空気通路33の下部より搬送通路27内に突出させた二つの気化ガス制御部38の制御壁39近傍における気化器20側に位置する炎口30内に設けている。
【0092】
以上のように構成された燃焼装置について、以下その動作と作用について説明する。気化ガス制御部38である制御壁39に遮られて、制御壁39の近傍に位置する炎口30に流入する気化ガス56の流量が増加して炎口30での気化ガスの噴出流速が増加して火炎54が不安定になり、分布も不均一になり易いものである。
【0093】
そこで、本実施例では、制御壁39の近傍に位置する炎口30に均圧板61を設け、この均圧板61により気化ガス56を整流して、制御壁39の近傍に位置する炎口30上の火炎54を均一に形成するようにしている。
【0094】
以上のように、本実施例においては、均圧板61で、制御壁39の近傍に位置する炎口30から噴出する気化ガス56を均一な分布に形成し、火炎54のリフトを防止して、気化ガス56の混合を促進し、刺激臭や一酸化炭素の発生を抑制して燃焼ガスの悪化を防止することができる。
【0095】
また、制御壁39の近傍に位置する炎口30は受熱部40に近いので、気化器20の受熱部40近傍の火炎54が均一になり、受熱部40に対して均等に熱を加えるので、受熱部40の不均一な余剰の空気55による冷却を防止して、気化器20への受熱量が増加し、加熱手段51を使用する時間が短縮され、加熱手段51の消費電力を低減できる。
【0096】
【発明の効果】
以上のように本発明によれば、搬送通路内での気化ガスの混合を促進し、炎口上に形成する火炎の分布を均一化して、刺激臭や一酸化炭素の発生を抑制するとともに、燃焼ガスの悪化を防止し、さらに気化器の加熱手段の消費電力を節減できる。
【図面の簡単な説明】
【図1】本発明の実施例1における燃焼装置を示す断面図
【図2】(a)図1のB―B線における燃焼装置の断面図
(b)図1のA―A線における燃焼装置の断面図
【図3】本発明の実施例2における燃焼装置の断面図
【図4】本発明の実施例3における燃焼装置の断面図
【図5】本発明の実施例4における燃焼装置の断面図
【図6】本発明の実施例5における燃焼装置の断面図
【図7】(a)本発明の実施例6における燃焼装置の搬送通路部分を示す上面図
(b)同燃焼装置を示す側断面図
【図8】(a)本発明の実施例7における燃焼装置の搬送通路部分を示す正面断面図
(b)同燃焼装置を示す側断面図
【図9】(a)本発明の実施例8における燃焼装置の搬送通路部分を示す正面断面図
(b)同燃焼装置を示す側断面図
【図10】(a)本発明の実施例9における燃焼装置の搬送通路部分を示す正面断面図
(b)同燃焼装置を示す側断面図
【図11】本発明の実施例10における燃焼装置の断面図
【図12】従来の燃焼装置の断面図
【符号の説明】
20 気化器
23 気化ガス出口
24 気化面
27 搬送通路
28 窪み部
30 炎口
33 2次空気通路
35 燃焼部
38、38a〜38f 気化ガス制御部
39、39a〜39f 制御壁
57 搬送通路突起部
58 切り欠き部
59 小切り欠き部
60 気化ガスガイド
61 均圧板
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vaporization type combustion device mounted on a home water heater or a heater to promote the mixing of vaporized gas of liquid fuel.
[0002]
[Prior art]
As shown in FIG. 12, in this type of conventional combustion apparatus, 1 is a pump for supplying liquid fuel, 2 is an oil feed pipe through which this liquid fuel passes, 3 is a nozzle from which liquid fuel is jetted, and 4 is , An electric heater, 5 is a carburetor in which the electric heater 4 is embedded, 6 is a blower fan for supplying combustion air, 7 is a blast passage for introducing combustion air to the carburetor 5, and 8 is A primary air passage 9 provided in the air passage 7 is a mixing chamber for uniformly mixing the combustible air-fuel mixture 10 mixed with the fuel vaporized by the vaporizer 5.
[0003]
Numeral 11 is provided in the upper part of the mixing chamber 9, and a plurality of flames are provided near the flame 11, and secondary air is provided near the flame 11 to supply combustion air to the flame 11. The passage, 13 is a secondary air port provided above the secondary air passage 12, 14 is a heat receiving fin projecting above the flame port 11 from the side of the carburetor 5, and 15 is a heat receiving fin of the primary air passage 8. An air amount adjusting means provided at the entrance to change the sectional area of the air passage 7 by opening and closing, and to substantially close the primary air passage 8 when closed.
[0004]
In the above configuration, the combustible air-fuel mixture 10 blows out from the flame port 11 and obtains combustion air from the secondary air port 13 and burns to a blue flame 16, while the carburetor 5 is heated to a predetermined temperature by the electric heater 4. When heated, the liquid fuel passes from the pump 1 through the oil feed pipe 2 and is sent out as droplets from the nozzle 3 to the vaporizer 5, where it is heated and vaporized.
[0005]
Further, the combustion air passes through an air passage 7 by an air blowing fan 6, a part of which is introduced into a carburetor 5 from a primary air passage 8 and mixed with vaporized fuel to form a combustible air-fuel mixture 10. After being uniformly mixed in 9, it is ejected from the flame outlet 11 and burned. On the other hand, the remaining air is supplied from the secondary air passage 12 to the secondary air port 13 provided in the vicinity of the flame port 11, and contributes to combustion.
[0006]
The vaporizer 5 is supplied with heat of combustion from the blue flame 16 via the heat receiving fins 14 and heats the vaporizer. If the amount of combustion is large, the air amount adjusting means 15 is opened, and a large amount of air is introduced into the carburetor 5 to promote combustion. If the amount of combustion is small, the air amount adjusting means 15 controls the primary air passage 8. And pressurize the air for combustion to improve the wind resistance and expand the combustion range (for example, see Patent Document 1).
[0007]
However, in the conventional configuration, when the fuel supplied from the nozzle 3 is vaporized in the vaporizer 5 and supplied to the mixing chamber 9 as the combustible mixture 10, the same direction as the flow direction of the combustible mixture 10 is used. Since the burner port 11 is arranged in the burner mixture 11, the distribution of the blue flame 16 formed on the burner port 11 becomes non-uniform because the unevenness of the mixture of the combustible air-fuel mixture 10 is not eliminated. There was a problem that irritating odor and carbon monoxide were generated by the lift.
[0008]
In addition, there is another problem that the heat of the electric heater 4 increases because the combustion heat is not transmitted to the heat receiving fins 14 due to the lift of the blue flame 16 near the heat receiving fins 14 of the vaporizer 5.
[0009]
[Patent Document 1]
JP-A-8-21606
[0010]
[Problems to be solved by the invention]
In view of the above problems of the prior art, the problem to be solved by the present invention is to promote the mixing of combustible air-fuel mixture, to make the distribution of flame formed in the flame outlet uniform, and to generate irritating odor and carbon monoxide. It is an object of the present invention to provide a combustion device that suppresses power consumption and does not increase power consumption of an electric heater.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a combustion device of the present invention is provided with a vaporizer having a vaporizing surface for vaporizing a liquid fuel, a transport passage communicating with a downstream side of the vaporizer, and a downstream side of the transport passage. A porous flame port, a secondary air passage adjacent to the flame port for supplying combustion air to the flame port, and dividing the flame port into a plurality of parts, and a flame port arranged in parallel with the vaporizing surface. The combustion section includes a secondary air passage, and a part of the combustion section includes a vaporized gas control section that protrudes into the transport passage.
[0012]
This promotes the mixing of the vaporized gas in the transport passage, makes the distribution of the flame formed in the flame opening uniform, suppresses the generation of irritating odor and carbon monoxide, and prevents the combustion gas from deteriorating. The power consumption of the heating means of the vessel is not increased.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Since the object of the present invention described above can be achieved by implementing the configuration described in each claim as an embodiment, the operation and effect of the configuration of each claim are described below together with the configuration described in the claims. Specific terms requiring explanation will be described in detail in the embodiments of the present invention with a detailed explanation.
[0014]
The invention according to claim 1 provides a vaporizer having a vaporizing surface for vaporizing a liquid fuel, a transport passage communicating with a downstream side of the vaporizer, and a porous flame port installed downstream of the transport passage. And a secondary air passage which supplies combustion air to the flame port adjacent to the flame port and divides the flame port into a plurality of parts, a flame port and a secondary air passage arranged in parallel with the vaporizing surface. A combustion section, and a vaporized gas control section which is provided in a part of the combustion section and projects toward the inside of the transport passage. It is dispersed in the next air passage, and the mixing of the vaporized gas is promoted by the vaporized gas control section, so that the distribution of the flame formed on the flame opening can be made uniform. As a result, generation of irritating odor and carbon monoxide can be suppressed, deterioration of combustion gas can be prevented, and power consumption of the heating means of the vaporizer can be prevented from increasing.
[0015]
According to a second aspect of the present invention, the vaporized gas control unit according to the first aspect is configured by projecting a flame port, thereby transmitting heat of the flame on the flame port to the vaporized gas control unit and recondensing the vaporized gas. And promotes mixing of vaporized gas, suppresses generation of irritating odor and carbon monoxide, prevents deterioration of combustion gas, and does not increase power consumption of heating means of the vaporizer.
[0016]
According to a third aspect of the present invention, the vaporized gas control unit according to the first or second aspect is configured by projecting a secondary air passage, so that the vaporized gas control unit is disposed at a position away from the flame outlet. Since the flow direction of the vaporized gas flowing into the flame outlet is changed to suppress the flow rate, the distribution of the flame formed on the flame outlet is made uniform, and the generation of irritating odor and carbon monoxide is suppressed, and the combustion gas deteriorates. To prevent the power consumption of the heating means of the vaporizer from increasing.
[0017]
According to a fourth aspect of the present invention, the vaporized gas control section according to any one of the first to third aspects is configured to protrude from the combustion section above the hollow section of the transport passage, so that the vaporized gas outlet of the vaporizer. After the vaporized gas ejected from is changed in the direction of flow at the depression, the vaporized gas control unit will be located in the flow, and will be diverted so as not to disturb the flow of the vaporized gas and close to the vaporizer side By distributing a large amount of vaporized gas to the flame outlet, it is possible to increase the thermal power near the vaporizer and reduce the power consumption of the heating means of the vaporizer.
[0018]
According to a fifth aspect of the present invention, the vaporized gas control unit according to any one of the first to fourth aspects is configured such that the length of the vaporized gas control unit that protrudes away from the vaporizer is shortened so as to face the inclined portion of the transport passage. By configuring a plurality of gas outlets, a uniform vaporized gas is distributed to a plurality of flame outlets provided downstream of the transport passage to promote mixing of the vaporized gas, so that irritating odors and carbon monoxide can be reduced. Generation can be suppressed to prevent deterioration of combustion gas.
[0019]
According to a sixth aspect of the present invention, the vaporized gas control unit according to any one of the first to fifth aspects is provided above the downstream side of the transporting passage projection provided in the recess of the transporting passage. The flow is changed to the protrusion, and the diverted gas collides with the vaporized gas control unit, and more vaporized gas is distributed to the flame near the vaporizer, so the heating power near the vaporizer is increased to heat the vaporizer. The power consumption of the means can be reduced.
[0020]
According to a seventh aspect of the present invention, the vaporized gas control unit according to any one of the first to sixth aspects is provided with a cutout provided substantially at the center of a control wall protruding into the transport passage, thereby providing vaporization. Prevents a decrease in the flow rate of the vaporized gas flowing into the flame outlet located immediately after the gas control unit at the flame central part, preventing the flame from lifting at the flame central part and suppressing the generation of pungent odor and carbon monoxide. As a result, deterioration of the combustion gas can be prevented.
[0021]
The invention according to claim 8 provides the vaporized gas control unit according to any one of claims 1 to 7 by providing a plurality of small notches in a control wall protruding into the transport passage. Since the flow rate of the vaporized gas flowing into the flame outlet provided immediately after the vaporized gas control unit is uniformly rectified and prevented, the lift of the flame at the center of the flame outlet is prevented, and the generation of irritating odor and carbon monoxide is prevented. It is possible to suppress the deterioration of the combustion gas by suppressing it.
[0022]
According to a ninth aspect of the present invention, the vaporized gas control unit according to any one of the first to eighth aspects is located near a vaporized gas outlet of a vaporizer, and supplies the vaporized gas ejected from the vaporized gas outlet to the transfer passage. By providing the vaporized gas guide that is guided in the central direction in the inside, the vaporized gas concentration in the central direction of the vaporizer is increased and the lift of the flame is prevented, so that the mixing of the vaporized gas is promoted, Generation of carbon monoxide can be suppressed to prevent deterioration of the combustion gas.
[0023]
According to a tenth aspect of the present invention, a vaporizing gas control is provided by providing a pressure equalizing plate in a flame port located on a side of a vaporizer near a control wall constituting the vaporized gas control unit according to any one of the first to ninth aspects. The part prevents the flame from becoming unstable due to the increase in the flow rate of the vaporized gas and the increase in the flow velocity of the vaporized gas at the flame opening, preventing the lift of the flame and the generation of irritating odor and carbon monoxide. And deterioration of the combustion gas can be prevented.
[0024]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0025]
(Example 1)
FIG. 1 is a cross-sectional view of a combustion device according to a first embodiment of the present invention. FIG. 2A is a schematic top view of a combustion portion of the combustion device, and FIG. Reference numeral 17 denotes a fuel pump for pumping kerosene, which is liquid fuel, from a fuel tank (not shown) to a combustion device. Reference numeral 18 denotes a fuel supply nozzle to which liquid fuel is supplied from the fuel pump 17 via an oil feed pipe 19.
[0026]
Reference numeral 20 denotes a vaporizer provided in front of the fuel supply nozzle 18 and is formed of a heat-resistant material having good heat conductivity, such as aluminum, aluminum die-cast, brass, copper, or cast iron, in a cylindrical shape. A vaporizer lid 22 is provided on the side of the vaporizer 20 so that the end of the blower pipe 21 faces the vaporizer lid 22. The vaporizer lid 22 is made of aluminum, aluminum die-cast, brass, copper, or the like. It is made of a material having good heat conductivity such as.
[0027]
The fuel supply nozzle 18 is inserted into the blower tube 21 toward the vaporizer 20. At the lower part of the vaporizer 20, a vaporized gas outlet 23 constituted by a vaporizer lid 22 is provided. The opposed inner wall of the fuel supply nozzle 18 of the carburetor 20 and the inner wall on the side of the carburetor 20 constitute a vaporizing surface 24. In particular, the vaporizing surface 24 is formed as an inclined surface 25 that is closer to the fuel supply nozzle 18 side as it goes downward on the inner wall facing the fuel supply nozzle 18.
[0028]
Reference numeral 26 denotes an outlet projection provided on the vaporized gas outlet 23, which projects from the inclined surface 25 toward the vaporizer lid 22, whereby the vaporized gas outlet 23 is divided into two outlets. Reference numeral 27 denotes a transfer passage provided below the vaporized gas outlet 23 of the vaporizer 20 and formed in a bowl shape from a heat-resistant material having good heat conductivity such as aluminum, aluminum die-cast, brass, and copper. The transfer passage 27 has a concave portion 28 below the vaporized gas outlet 23, and a slope 29 is raised from the concave portion 28 in a direction opposite to the vaporizer 20.
[0029]
Further, a porous flame port 30 made of a heat-resistant material such as steel, iron, titanium, or ceramic is provided downstream of the transport passage 27, and is formed by bending a flat punching plate. Reference numeral 31 denotes a burner case that covers the entirety of the combustion section 35 composed of a plurality of combinations of the flame outlet 30 and the secondary air passage 33, and a space inside the burner case is provided around the vaporizer 20, the transport passage 27, and the flame outlet 30. Is formed as a secondary air guide passage 32 provided so as to surround.
[0030]
As shown in FIG. 2A, the secondary air passage 33 is formed in a cylindrical shape which is adjacent to the flame port 30 and divides the flame port 30 into a plurality of parts. And a plurality of secondary air outlets 34 facing the downstream side of the flame outlet 30.
[0031]
The secondary air passage 33 is formed by bending a flat plate. The flame port 30 and the secondary air path 33 are configured to be flush with each other toward the downstream side of the flame port. Are arranged in parallel. Reference numeral 36 denotes a side wall provided between the flame outlet 30 and the secondary air guide passage 32, and a combustion chamber 37 is formed inside the side wall.
[0032]
Numeral 38 denotes a vaporized gas control unit comprising a control wall 39 projecting into the transport passage 27 below the combustion unit 35. The control wall 39 distributes the flow of the vaporized gas near the flame outlet 30. Are located.
[0033]
Further, the vaporized gas control unit 38 is disposed in a direction opposite to the vaporizer 20 with respect to the flame outlet 30, and the vaporized gas collides with the control wall 39 in the transport passage 27 and follows the same, so that the vaporized gas is in the flame outlet 30. Vaporized gas is made to flow easily. The shape of the vaporized gas control section 38 is such that a plurality of cut-and-raised portions are provided on a flat plate made of a heat-resistant material (for example, stainless steel, iron, copper, ceramic, or the like) and attached to the side of the secondary air passage 33 on the side of the transfer passage 27. ing. Numeral 40 denotes a fin-shaped heat receiving portion formed on the back surface of the vaporizer 20 so as to protrude into the combustion chamber 37, and a plurality of heat receiving portions are arranged at positions protruding above the flame outlet 30.
[0034]
Reference numeral 41 denotes a heat exchanger mounted on the top plate portion 42 of the air passage 32 so as to cover the upper part of the flame port 30. The heat exchanger 41 is made of a heat-resistant heat-resistant copper or aluminum material and has a tubular shape. A large number of plate-like fins are provided on a plurality of hot water pipes provided on the way. Reference numeral 43 denotes a blower for supplying combustion air. The impeller uses a turbo fan or a radial fan capable of generating high pressure, and is configured to rotate the fan by a motor. It is connected to the communicating ventilation passage 44.
[0035]
The blower tube 21 is provided inside the blower passage 44. The ventilation pipe 21 is provided with a plurality of communication ports 45 communicating with the ventilation passage 44 at a position just before being inserted into the vaporizer lid 22. Reference numeral 46 denotes an air conditioner provided in the air passage 44. The air damper 46 is a closing damper 47 and an upper damper 48 that change the airflow resistance of the air duct 21 by opening and closing, and a driving device that rotationally drives the closing damper 47 and the upper damper 48. 49.
[0036]
The closing damper 47 and the upper damper 48 are provided so as to rotate coaxially about the plate surfaces of the two plates, and may be opened and closed vertically or opened horizontally. The closing damper 47 is provided on the side that comes into contact with the inlet of the blower tube 21, and partially has a plurality of through holes 50. The upper damper 48 is provided at a position overlapping the outside of the closing damper 47, and substantially contacts the closing damper 47 in the mode of the region including the minimum combustion amount, substantially closes the through hole 50, and the region where the combustion amount is intermediate. In this mode, an angle is provided with the closing damper 47 to open the through hole 50.
[0037]
In the mode including the region where the combustion amount of the combustion device is maximized, both the closing damper 47 and the upper damper 48 are opened, and the entrance of the air duct 21 is enlarged to the maximum. The driving device 49 includes a stepping motor, a solenoid, a motor, a gear, a cam, and the like, and is configured such that the closing damper 47 and the upper damper 48 perform respective operations. It is connected to the upper damper 48.
[0038]
Reference numeral 51 denotes a heating unit for the vaporizer 20, which is composed of an electric heating element such as a nichrome wire or a Kanthal wire cast into the vaporizer 20. Reference numeral 52 denotes a vaporizer temperature detecting unit for detecting the temperature of the vaporizer 20, which is composed of a thermistor, a thermocouple, and the like. Reference numeral 53 denotes a control unit that turns on and off the heating unit 51 to maintain the vaporizer 20 at a predetermined temperature according to a signal from the vaporizer temperature detection unit 52. The control unit 53 is provided so as to operate the fuel pump 17, the blower 43, and the air conditioner 46 in accordance with the instruction of the operation switch and the magnitude of the load, and to control the state to an appropriate state. In the drawing, reference numeral 54 denotes a flame formed on the flame outlet 30, 55 denotes a flow of air, and 56 denotes a flow of a vaporized gas which is a combustible mixture.
[0039]
The operation and operation of the combustion device configured as described above will be described below. First, when a power supply (not shown) is turned on, the heating means 51 is energized, and the vaporizer 20 is heated. When the vaporizer 20 reaches a predetermined temperature, the vaporizer temperature is detected by the vaporizer temperature detection unit 52, and the heating unit 51 is turned on and off according to an instruction from the control unit 53 to set the preheating temperature (for example, 220 to 260 ° C.) of the vaporizer 20. Preheat while maintaining constant.
[0040]
When the operation is started, the blower 43 operates according to an instruction from the control unit 53, and the combustion air is supplied. The amount of the air 55 supplied to the air passage 44 is adjusted by the closing damper 47 and the upper damper 48 of the air regulator 46, and then the air 55 is supplied to the primary air and the secondary air guide passage 33 supplied to the air duct 21. It is divided into the supplied secondary air. At the same time, the fuel pump 17 operates, and the liquid fuel is sprayed from the fuel supply nozzle 18 to the carburetor 20.
[0041]
The liquid fuel is vaporized on the high-temperature vaporization surface 24, passes through the vaporized gas outlet 23 while being mixed with the air 55 supplied through the blower pipe 21, and is provided along the lower portion of the combustion unit 35. It collides with the control wall 39 of the section 38, passes while changing its flow, is dispersed in the transport passage 27, and is sent to the flame outlet 30 as uniform combustible vaporized gas 56.
[0042]
Further, the combustible vaporized gas 56 ejected from the flame port 30 is ignited by an ignition electrode (not shown) which has previously performed a spark discharge, and a flame 54 is formed to start burning. Thereafter, the heat of the flame 54 is received by the heat receiving section 40 of the vaporizer 20, and the vaporizer 20 is heated. The state of the flame 54 formed on the flame port 30 is monitored by a flame detection unit (flame rod: not shown) to maintain stable combustion. The high-temperature combustion gas generated by the combustion is exchanged by the heat exchanger 41 and discharged.
[0043]
When the combustion amount is maximum, the closing damper 47 and the upper damper 48 of the air controller 46 are opened to the maximum, the passage resistance of the blower tube 21 is minimized, and the rotation speed of the blower 43 is maximized. At this time, particularly, the angle of the closing damper 47 is maximized, and the upper damper 48 may be either in contact with the closing damper 47 or may be opened at a larger angle. Next, when reducing the amount of combustion, the output of the fuel pump 17 is reduced and the rotation speed of the blower 43 is reduced at the same time (this is a region including the maximum amount of combustion).
[0044]
When the amount of combustion is minimized, the closing damper 47 is brought into contact with the blower tube 21 and the upper damper 48 is brought into contact with the outer cover so as to cover it from outside, so that the blower tube 21 is substantially closed and the passage resistance is maximized. As a result, a small amount of air is introduced into the vaporizer 20 from the communication port 45 of the blower tube 21 and the combustion reaction is slowed down. As a result, the temperature of the flame port 30 does not rise to a red heat state, and it is possible to prevent a flashback to the transport passage 27 and the thermal deformation of the flame port 30, and to reduce the combustion amount. It is set to be large (this is the region including the minimum combustion amount).
[0045]
In the case of an intermediate combustion amount, the closing damper 47 is brought into contact with the air pipe 21 to substantially close the air pipe 21, and the upper damper 48 is opened at an angle so as to cover the outer damper from the outside thereof. The through-hole 50 is opened, and the blowing resistance of the blower tube 21 is set to an intermediate region between the region including the maximum combustion amount and the region including the minimum combustion amount (this is an intermediate combustion region). As a result, an appropriate amount of air is introduced into the vaporizer 20 to promote the combustion reaction and perform stable combustion.
[0046]
As described above, in the present embodiment, the vaporizer 20 having the vaporization surface 24 for vaporizing the liquid fuel, the transport passage 27 communicating with the downstream side of the vaporizer 20, and the transport passage 27 installed downstream of the transport passage 27. The flame outlet 30, a secondary air passage 33 adjacent to the flame outlet 30 and dividing the flame outlet 30 into a plurality, and the flame outlet 30 and the secondary air passage 33 are arranged in parallel with the vaporizing surface 24. A combustion section 35 is provided, and a vaporized gas control section 38 is provided at a part of the combustion section 35 so as to protrude into the transport passage 27.
[0047]
Therefore, the vaporized gas 56 is dispersed on the upstream side of the secondary air passage 33 and the plurality of flame outlets 30 arranged in parallel with the vaporizing surface 24 in the transport passage 27 to promote the mixing, so that the vaporized gas 56 is formed on the flame outlet 30. The distribution of the burning flame 54 can be made uniform. Thereby, generation of irritating odor and carbon monoxide can be suppressed to prevent deterioration of combustion gas, and power consumption of the heating means 51 of the vaporizer 20 can be prevented from increasing.
[0048]
Further, a plurality of flame ports 30 are provided in parallel with the vaporizing surface 24, and a highly concentrated vaporized gas 56 flowing along the peripheral wall of the transport path 27 from the vaporized gas outlet 23 in the transport path 27 is supplied to the plurality of flame ports 30. Since the gas is divided and continuously introduced, the vaporized gas 56 is directed toward the center 27a of the transport passage 27 to promote the mixing with the air 55 and to make the distribution of the flame 54 formed on the flame outlet 30 uniform. Can be. Accordingly, local lift of the flame 54 near the center of the flame outlet 30 can be prevented, generation of pungent odor and carbon monoxide can be prevented, and the exhaust gas characteristics of the combustion gas can be improved.
[0049]
Further, since the flame 54 near the heat receiving portion 40 of the vaporizer 20 becomes uniform and heat is uniformly applied to the heat receiving portion 40, the heat receiving portion 40 is prevented from being cooled by the non-uniform excess air 55, and vaporized. The amount of heat received by the heater 20 increases, the time for using the heating means 51 is shortened, and the power consumption of the heating means 51 can be reduced.
[0050]
In the present embodiment, the air conditioner 46 is provided in the air passage 44, and the region including the maximum combustion amount, the region including the minimum combustion amount, and the primary region that is introduced into the air duct 21 in the intermediate region therebetween. By adjusting the amount of air in a stepwise manner, the range of adjusting the amount of combustion can be greatly expanded, and good wind resistance can be maintained in this wide range of adjustment.
[0051]
Further, by closing the closing damper 47 and the upper damper 48 of the air conditioner 44 of the present embodiment while the carburetor 20 is in the preheating standby state, it is possible to prevent the temperature of the carburetor 20 and the transfer passage 27 from lowering. The power consumption of the heating means 51 can be reduced.
[0052]
(Example 2)
FIG. 3 is a cross-sectional view illustrating a combustion device according to Embodiment 2 of the present invention. This embodiment is different from the first embodiment in that the vaporized gas control unit is configured by projecting the side of the flame outlet, and the other parts having the same configuration and the same operation and effect are denoted by the same reference numerals. Therefore, detailed description is omitted, and different points will be mainly described.
[0053]
In FIG. 3, the vaporized gas control section 38 a is configured by a control wall 39 a having a side portion of the flame port 30 protruding vertically toward the transport passage 27.
[0054]
The operation and operation of the combustion device configured as described above will be described below. The heat of the flame 54 on the flame port 30 is transmitted to the control wall 39a of the vaporized gas control unit 38a integrally formed with the flame port 30 to increase the temperature of the control wall 39a and prevent the vaporized gas 56 from re-condensing. Then, the mixture of the air 55 and the vaporized gas 56 is promoted, the distribution of the flame 54 on the flame outlet 30 is made uniform, the local lift of the flame 54 is prevented, and the generation of irritating odor and carbon monoxide is suppressed. Is prevented, the flame 54 near the heat receiving portion 40 of the vaporizer 20 becomes uniform, and heat is applied to the heat receiving portion 40 evenly.
[0055]
As described above, in the present embodiment, the temperature of the control wall 39a is increased by the conduction heat from the flame outlet 30 to prevent re-condensation of the vaporized gas, so that the vaporized gas 56 is formed uniformly and the flame 54 By preventing local lift, generation of pungent odor and carbon monoxide can be prevented, and the exhaust gas characteristics of the combustion gas can be improved.
[0056]
Further, the amount of heat received by the vaporizer 20 increases, so that the power consumption of the heating means 51 of the vaporizer 20 can be prevented from increasing. In addition, since the vaporized gas control unit 38a is integrally formed with the flame outlet 30, the number of parts can be reduced, and the assembling is simplified, so that the cost can be reduced.
[0057]
(Example 3)
FIG. 4 is a sectional view showing a combustion device according to Embodiment 3 of the present invention. This embodiment is different from the inventions of the first and second embodiments in that the vaporized gas control unit is configured by projecting the side of the secondary air passage. The detailed description is omitted by attaching the same reference numerals, and different points will be mainly described.
[0058]
The vaporized gas control section 38b is constituted by a control wall 39a in which a side portion of the secondary air passage 33 is integrally projected vertically toward the transport passage 27, and a portion into which the vaporized gas 56 flows into the flame outlet 30. Located away from
[0059]
The operation and operation of the combustion device configured as described above will be described below. The vaporized gas control unit 38b is formed integrally with the secondary air passage 33 adjacent to the flame outlet 30, and the control wall 39b of the vaporized gas control unit 38b is located away from the portion where the vaporized gas 56 flows into the flame outlet 30. Therefore, the vaporized gas 56 colliding with the control wall 39b is reversed and comes into contact with the vaporized gas 56 flowing into the flame outlet 30 from another direction to apply a brake, thereby changing the direction of the vaporized gas 56 and suppressing the flow rate. The distribution of the flame 54 formed on the flame outlet 30 is made uniform.
[0060]
As described above, in the present embodiment, the vaporized gas 56 is uniformly formed, the local lift of the flame 54 is prevented, the generation of pungent odor and carbon monoxide is prevented, and the exhaust gas characteristics of the combustion gas are reduced. Can be improved. Further, the amount of heat received by the vaporizer 20 increases, so that the power consumption of the heating means 51 of the vaporizer 20 can be prevented from increasing. Further, the vaporized gas control section 38a is formed integrally with the secondary air passage 33, so that the number of parts can be reduced, the assembly is simplified, and the cost can be reduced.
[0061]
(Example 4)
FIG. 5 is a sectional view showing a combustion device according to Embodiment 4 of the present invention. This embodiment is different from the inventions of the first to third embodiments in that the vaporized gas control unit is configured to protrude from the combustion unit located above the depression of the transport passage, and the other configurations and functions and effects are the same. The parts to be played will be assigned the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.
[0062]
The vaporized gas control section 38c includes a control wall 39c vertically protruding from the combustion section 35 above the concave section 28 of the transport path 27 toward the transport path 27, and controls the flow of the vaporized gas 56 on the vaporizer 20 side. It is directed to the flame outlet 30.
[0063]
The operation and operation of the combustion device configured as described above will be described below. The flow direction of the vaporized gas 56 ejected from the vaporized gas outlet 23 of the vaporizer 20 can be changed at the recess 28. Then, the vaporized gas control unit 38c is disposed inside the flow direction after being changed, and divides the vaporized gas 56 so as not to disturb it, and distributes the vaporized gas 56 to the flame port 30 on the vaporizer 20 side in a large amount. Like that. Therefore, many flames of the flame outlet 30 near the vaporizer 20 are generated.
[0064]
As described above, in the present embodiment, the flow of the vaporized gas 56 is directed to the flame outlet 30 on the vaporizer 20 side by the control wall 39c of the vaporized gas control unit 38c, and the flame near the heat receiving unit 40 of the vaporizer 20 is formed. Since the heating power of the heating unit 54 is increased and a large amount of heat is applied to the heat receiving unit 40, the power consumption of the heating unit 51 of the vaporizer 20 can be reduced.
[0065]
In addition, since the flow of the vaporized gas 56 is changed in the recessed portion 28 and further divided by the control wall 39c of the vaporized gas control unit 38c, the vaporized gas 56 can be easily distributed and accurately distributed.
[0066]
(Example 5)
FIG. 6 is a sectional view showing a combustion apparatus according to Embodiment 5 of the present invention. This embodiment is different from the inventions of the first to fourth embodiments in that the vaporized gas control unit is configured by a plurality of control walls having different lengths protruding from the combustion unit in opposition to the inclined portion of the transport passage, The other components having the same configuration and the operation and effect are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.
[0067]
In FIG. 6, the vaporized gas control unit 38d is constituted by a plurality of control walls 39d having different lengths protruding from the combustion unit 35 in opposition to the inclined portion 29 of the transport passage 27, and the control wall 39d is formed by the control wall 39d. In accordance with the degree of inclination of the inclined portion 29, the length of the projection gradually becomes shorter as the distance from the vaporizer 20 increases.
[0068]
The operation and operation of the combustion device configured as described above will be described below. The vaporized gas 56 moving along the inclined portion 29 of the transport passage 27 collides with a plurality of control walls 39d of the vaporized gas control portion 38d protruding from the combustion portion 35 opposite to the inclined portion 29, and is dispersed. A uniform vaporized gas is distributed to the plurality of flame ports 30 located downstream.
[0069]
Further, the three control walls 39d are gradually shortened as the distance from the vaporizer 20 increases in accordance with the degree of inclination of the inclined portion 29, so that a sudden change in the distribution of the vaporized gas 56 is prevented, and uniformity is achieved. Thus, a flow of the vaporized gas 56 is formed. Therefore, a uniform flame is formed in the flame outlet 30.
[0070]
As described above, in the present embodiment, the distribution of the vaporized gas 56 to the flame outlet 30 is made uniform, so that the local lift of the flame 54 is prevented, and the generation of pungent odor and carbon monoxide is suppressed. Deterioration of combustion gas can be prevented.
[0071]
Further, since the flame 54 near the heat receiving portion 40 of the vaporizer 20 becomes uniform and heat is uniformly applied to the heat receiving portion 40, the amount of heat received by the vaporizer 20 increases, and the time for using the heating means 51 increases. Therefore, the power consumption of the heating means 51 can be reduced.
[0072]
(Example 6)
FIG. 7A is a top view illustrating a transport passage portion of a combustion device according to a sixth embodiment of the present invention, and FIG. 7B is a cross-sectional view illustrating the same combustion device. The present embodiment is the invention of the first to fifth embodiments in that the vaporized gas control unit is configured to protrude into the transfer passage from the lower part of the combustion unit on the downstream side of the transfer passage protrusion provided at the bottom of the transfer passage. Unlike the above, other parts having the same configuration and operation and effect are denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.
[0073]
Reference numeral 57 denotes a transfer passage protrusion provided substantially at the center of the inner bottom of the recess 28 of the transfer passage 27. The vaporized gas control unit 38 is located downstream of the transfer passage protrusion 57 from the lower part of the combustion unit 35 in the transfer passage 27. To protrude.
[0074]
The operation and operation of the combustion device configured as described above will be described below. When the flow direction of the vaporized gas 56 ejected from the vaporized gas outlet 23 of the vaporizer 20 is changed in the concave portion 28, the vaporized gas 56 is transferred to the vaporizer 20 by the transfer passage protrusion 57 located substantially at the center of the concave portion 28. A portion of the vaporized gas 56 is distributed to the close flame 30, and the remaining vaporized gas 56 moves along the depression 28, and the vaporized gas control unit 38 is located in the flow of the vaporized gas 56, and The diverted flow is distributed more to the flame outlet 30 located on the vaporizer 20 side. Therefore, the heating power of the flame 54 formed in the flame port 30 near the vaporizer 20 increases stepwise as the vaporizer 20 approaches.
[0075]
As described above, in the present embodiment, the thermal power of the flame 54 formed in the flame outlet 30 near the vaporizer 20 is increased stepwise by the transport passage projection 57 and the vaporized gas control unit 38, and The amount of heat received by the evaporator 20 increases, and the power consumption of the heating means 51 of the vaporizer 20 can be reduced.
[0076]
(Example 7)
FIG. 8A is a front cross-sectional view illustrating a transport passage portion of a combustion device according to a seventh embodiment of the present invention, and FIG. 8B is a side cross-sectional view illustrating the same combustion device. The present embodiment differs from the inventions of the first to sixth embodiments in that the vaporized gas control unit is formed by a control wall having a cut-out portion provided substantially in the center by projecting the vaporized gas control unit from the lower part of the combustion unit into the transfer passage. Parts having the same configuration and operation and effect other than those described above are denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.
[0077]
The vaporized gas control unit 38e is configured by a control wall 39e that protrudes from the lower part of the combustion unit 35 into the transport passage 27 and has a cutout 58 provided substantially at the center of the lower end.
[0078]
The operation and operation of the combustion device configured as described above will be described below. Part of the vaporized gas 56 moving along the control wall 39e of the vaporized gas control unit 38e passes through the notch 58 located substantially at the center of the lower end of the control wall 39e, and immediately after the adjacent secondary air passage 33. , And a decrease in the flow rate of the vaporized gas 56 at the center of the flame port 30 is prevented. Therefore, a stable flame is formed even in the central part of the combustion part 35.
[0079]
As described above, in the present embodiment, the lift of the flame 54 at the center of the flame port 30 located behind the vaporized gas control unit 38e is prevented, and the generation of pungent odor and carbon monoxide is suppressed. Deterioration of combustion gas can be prevented.
[0080]
(Example 8)
FIG. 9A is a front cross-sectional view showing a conveying passage portion of a combustion device according to Embodiment 8 of the present invention, and FIG. 9B is a side cross-sectional view showing the same combustion device. The present embodiment is different from the inventions of the first to seventh embodiments in that the vaporized gas control unit is formed by a control wall having a plurality of small cutout portions provided substantially at the center by projecting the vaporized gas control unit from the lower part of the combustion unit into the transport passage. Otherwise, parts having the same configuration and operation and effect will be denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.
[0081]
The vaporized gas control section 38f is formed of a control wall 39f that protrudes from the lower part of the combustion section 35 into the transport passage 27 and has a plurality of small notches 59 provided substantially at the center.
[0082]
The operation and operation of the combustion device configured as described above will be described below. Part of the vaporized gas 56 moving along the control wall 39f of the vaporized gas control unit 38f passes through a plurality of small notches 59 provided in the control wall 39f, and immediately after the adjacent secondary air passage 33. The flow rate of the vaporized gas 56 flowing into the located flame port 30 and flowing into the flame port 30 is prevented while uniformly rectifying the flow rate.
[0083]
As described above, in the present embodiment, the distribution of the flame 54 of the flame outlet 30 located behind the vaporized gas control unit 38f is made uniform, thereby suppressing the generation of pungent odor and carbon monoxide, thereby deteriorating the combustion gas. Can be prevented.
[0084]
(Example 9)
FIG. 10A is a front sectional view showing a vaporized gas outlet portion of a combustion apparatus according to Embodiment 9 of the present invention, and FIG. 10B is a side sectional view of the same. This embodiment differs from the inventions of the first to eighth embodiments in that the vaporized gas guide is provided near the vaporized gas outlet, and the other parts having the same configuration and the same operation and effect are denoted by the same reference numerals and described in detail. A detailed description is omitted, and different points are mainly described.
[0085]
Reference numeral 60 denotes a pair of vaporized gas guides made of a heat-resistant material such as steel, iron, copper, or ceramic, and is provided near the vaporized gas outlet 23 of the vaporizer 20 so as to protrude into the transport passage 27. The vaporized gas guide 60 is positioned on the left and right sides of the transport passage 27 so as to guide the vaporized gas 56 ejected from the vaporized gas outlet 23 toward the center in the transport passage 27. The vaporized gas control unit 38 includes a control wall 39 protruding from the lower part of the combustion unit 35 toward the inside of the transport passage 27 downstream of the vaporized gas guide 60.
[0086]
The operation and operation of the combustion device configured as described above will be described below. The vaporized gas guide 60 promotes the mixing with the air 55 by directing the highly concentrated vaporized gas 56 flowing along the peripheral wall of the transport passage 27 from the vaporized gas outlet 23 in the transport passage 27 toward the center of the transport passage 27. Later, the vaporized gas controller 38 disperses the vaporized gas 56 so that the vaporized gas 56 flows into the flame outlet 30 uniformly.
[0087]
As described above, in the present embodiment, the concentration of the vaporized gas 56 in the central direction in the vaporizer 20 is increased to prevent the flame 54 from being lifted, so that the vaporized gas control unit 38 easily mixes the vaporized gas 56. Can be promoted, and generation of pungent odor and carbon monoxide can be suppressed to prevent deterioration of combustion gas.
[0088]
Further, since the flame 54 near the heat receiving portion 40 of the vaporizer 20 becomes uniform and heat is uniformly applied to the heat receiving portion 40, the heat receiving portion 40 is prevented from being cooled by the non-uniform excess air 55, and vaporized. The amount of heat received by the heater 20 increases, the time for using the heating means 51 is shortened, and the power consumption of the heating means 51 can be reduced.
[0089]
In addition, since the vaporized gas guide 60 is provided near the vaporized gas outlet 23, the vaporized gas 56 ejected from the vaporized gas outlet 23 is easily dispersed before the vaporized gas 56 re-condenses. A uniform vaporized gas 56 can be sent to the entire area of the located flame outlet 30.
[0090]
(Example 10)
FIG. 11 is a sectional view showing a combustion apparatus according to Embodiment 10 of the present invention. This embodiment is different from the inventions of the first to ninth embodiments in that a pressure equalizing plate is provided in a flame outlet close to a vaporized gas control unit, and other parts having the same configuration and operation and effect are denoted by the same reference numerals. Therefore, detailed description will be omitted, and different points will be mainly described.
[0091]
Reference numeral 61 denotes a pressure equalizing plate formed of a net (wire mesh) or a punching plate. The control walls 39 of the two vaporized gas control sections 38 project from the lower part of the secondary air passage 33 into the transport passage 27 in order from the vaporizer 20 side. It is provided in a flame port 30 located on the vaporizer 20 side in the vicinity.
[0092]
The operation and operation of the combustion device configured as described above will be described below. The flow rate of the vaporized gas 56 flowing into the flame outlet 30 located near the control wall 39 is increased by being interrupted by the control wall 39 which is the vaporized gas control unit 38, and the jet flow velocity of the vaporized gas at the flame outlet 30 is increased. As a result, the flame 54 becomes unstable and the distribution tends to be non-uniform.
[0093]
Therefore, in the present embodiment, a pressure equalizing plate 61 is provided on the flame outlet 30 located near the control wall 39, and the vaporized gas 56 is rectified by the pressure equalizing plate 61, so that it is located above the flame outlet 30 located near the control wall 39. Is formed uniformly.
[0094]
As described above, in this embodiment, the equalizing plate 61 forms the vaporized gas 56 ejected from the flame outlet 30 located near the control wall 39 in a uniform distribution, thereby preventing the flame 54 from being lifted. It is possible to promote the mixing of the vaporized gas 56, suppress the generation of pungent odor and carbon monoxide, and prevent the deterioration of the combustion gas.
[0095]
Also, since the flame outlet 30 located near the control wall 39 is close to the heat receiving unit 40, the flame 54 near the heat receiving unit 40 of the vaporizer 20 becomes uniform, and heat is uniformly applied to the heat receiving unit 40. The cooling of the heat receiving unit 40 due to the non-uniform excess air 55 is prevented, the amount of heat received by the vaporizer 20 is increased, the time for using the heating unit 51 is shortened, and the power consumption of the heating unit 51 can be reduced.
[0096]
【The invention's effect】
As described above, according to the present invention, the mixing of the vaporized gas in the transport passage is promoted, the distribution of the flame formed on the flame outlet is made uniform, the generation of pungent odor and carbon monoxide is suppressed, and the combustion is performed. The deterioration of gas can be prevented, and the power consumption of the heating means of the vaporizer can be further reduced.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a combustion apparatus according to a first embodiment of the present invention.
FIG. 2A is a sectional view of the combustion device taken along line BB in FIG. 1;
(B) Sectional view of the combustion device taken along line AA in FIG.
FIG. 3 is a sectional view of a combustion device according to a second embodiment of the present invention.
FIG. 4 is a sectional view of a combustion device according to a third embodiment of the present invention.
FIG. 5 is a sectional view of a combustion apparatus according to a fourth embodiment of the present invention.
FIG. 6 is a sectional view of a combustion device according to a fifth embodiment of the present invention.
FIG. 7A is a top view showing a transfer passage portion of a combustion device according to a sixth embodiment of the present invention.
(B) Side sectional view showing the combustion device
FIG. 8 (a) is a front cross-sectional view illustrating a transfer passage portion of a combustion device according to a seventh embodiment of the present invention.
(B) Side sectional view showing the combustion device
FIG. 9 (a) is a front sectional view showing a transfer passage portion of a combustion device according to an eighth embodiment of the present invention.
(B) Side sectional view showing the combustion device
FIG. 10 (a) is a front sectional view showing a transfer passage portion of a combustion device according to a ninth embodiment of the present invention.
(B) Side sectional view showing the combustion device
FIG. 11 is a sectional view of a combustion apparatus according to a tenth embodiment of the present invention.
FIG. 12 is a sectional view of a conventional combustion device.
[Explanation of symbols]
20 vaporizer
23 Vaporized gas outlet
24 Evaporation surface
27 Transport passage
28 hollow
30 Flame Mouth
33 Secondary air passage
35 Combustion unit
38, 38a to 38f Vaporized gas control unit
39, 39a-39f Control wall
57 Conveyance path projection
58 Notch
59 Small notch
60 Vaporized gas guide
61 Equalizing plate

Claims (10)

液体燃料を気化する気化面を有する気化器と、この気化器の下流側に連通する搬送通路と、この搬送通路の下流側に設置された多孔状の炎口と、この炎口に隣接して炎口に燃焼用空気を与え、かつ炎口を複数に分割する2次空気通路と、前記気化面に並行に配置した前記炎口と2次空気通路で構成した燃焼部と、この燃焼部の一部に前記搬送通路内に向かって突出する気化ガス制御部を設けてなる燃焼装置。A vaporizer having a vaporizing surface for vaporizing the liquid fuel, a transport passage communicating with the downstream side of the vaporizer, a porous flame port installed downstream of the transport path, and A secondary air passage which supplies combustion air to the flame port and divides the flame port into a plurality of parts; a combustion part comprising the flame port and a secondary air path arranged in parallel with the vaporizing surface; A combustion device comprising a part provided with a vaporized gas control part projecting into the transfer passage. 気化ガス制御部は、炎口から突出させて構成した請求項1記載の燃焼装置。The combustion device according to claim 1, wherein the vaporized gas control unit is configured to protrude from the flame outlet. 気化ガス制御部は、2次空気通路を突出させて構成した請求項1または請求項2記載の燃焼装置。The combustion device according to claim 1, wherein the vaporized gas control unit is configured to project a secondary air passage. 気化ガス制御部は、搬送通路の窪み部上方の燃焼部から突出させて構成した請求項1〜3のいずれか1項に記載の燃焼装置。The combustion device according to any one of claims 1 to 3, wherein the vaporized gas control unit is configured to protrude from a combustion unit above a depression of the transport passage. 気化ガス制御部は、気化器から離れるほどに突出する長さを短くして複数個を設置してなる請求項1〜4のいずれか1項に記載の燃焼装置。The combustion device according to any one of claims 1 to 4, wherein a plurality of the vaporized gas control units are installed with a shorter projecting length as being away from the vaporizer. 気化ガス制御部は、搬送通路の窪み部に設けた搬送通路突起部の下流側上方に設けてなる請求項1〜5のいずれか1項に記載の燃焼装置。The combustion device according to any one of claims 1 to 5, wherein the vaporized gas control unit is provided on a downstream side and above a transfer passage protrusion provided in a concave portion of the transfer passage. 気化ガス制御部は、搬送通路内に突出する制御壁の略中央に切り欠き部を設けてなる請求項1〜6のいずれか1項に記載の燃焼装置。The combustion device according to any one of claims 1 to 6, wherein the vaporized gas control unit is provided with a cutout at substantially the center of a control wall protruding into the transport passage. 気化ガス制御部は、搬送通路内に突出する制御壁に複数個の小切り欠き部を設けてなる請求項1〜7のいずれか1項に記載の燃焼装置。The combustion device according to any one of claims 1 to 7, wherein the vaporized gas control unit is provided with a plurality of small notches on a control wall protruding into the transport passage. 気化ガス制御部は、気化器の気化ガス出口の近傍に位置し、気化ガス出口から噴出する気化ガスを搬送通路内の中央方向に誘導する気化ガスガイドの下流側に設けてなる請求項1〜8のいずれか1項に記載の燃焼装置。The vaporized gas control unit is located near the vaporized gas outlet of the vaporizer, and is provided on the downstream side of the vaporized gas guide that guides the vaporized gas ejected from the vaporized gas outlet toward the center in the transport passage. 9. The combustion device according to any one of 8 above. 気化ガス制御部の制御壁近傍に位置する炎口内に均圧板を設けてなる請求項1〜9のいずれか1項に記載の燃焼装置。The combustion device according to any one of claims 1 to 9, wherein a pressure equalizing plate is provided in a flame port located near a control wall of the vaporized gas control unit.
JP2002351060A 2002-12-03 2002-12-03 Combustion apparatus Pending JP2004183973A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110006047A (en) * 2019-03-27 2019-07-12 湖南人文科技学院 Refuse incinerator and refuse gasification incinerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110006047A (en) * 2019-03-27 2019-07-12 湖南人文科技学院 Refuse incinerator and refuse gasification incinerator
CN110006047B (en) * 2019-03-27 2024-05-28 湖南人文科技学院 Garbage incinerator and garbage gasification incinerator

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